Kinetic and spectral properties of pea cytosolic ascorbate peroxidase.

Abstract

Sufficient highly purified native pea cytosolic ascorbate peroxidase was obtained to characterize some of its kinetic and spectral properties. Its rate constant for compound I formation from reaction with H2O2 is 4.O x 10(7) M-1 s-1, somewhat faster than is typical for peroxidases. Compound I has the typical optical spectrum of an iron(IV)-porphyrin-pi… (More)

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